18981586

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{6823}}^1$

素因数の和:6945

約数の個数: 16

約数和(自身を含む): 30953664

約数和(自身を除く): 11972078

約数列:

[1, 2, 13, 26, 107, 214, 1391, 2782, 6823, 13646, 88699, 177398, 730061, 1460122, 9490793, 18981586]

約数ペア:

[(1, 18981586), (2, 9490793), (13, 1460122), (26, 730061), (107, 177398), (214, 88699), (1391, 13646), (2782, 6823)]